1 /* 2 * Copyright (C) 2009 by Matthias Ringwald 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of the copyright holders nor the names of 14 * contributors may be used to endorse or promote products derived 15 * from this software without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY MATTHIAS RINGWALD AND CONTRIBUTORS 18 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 19 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 20 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL MATTHIAS 21 * RINGWALD OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 23 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS 24 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 25 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF 27 * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28 * SUCH DAMAGE. 29 * 30 */ 31 32 /* 33 * hci.c 34 * 35 * Created by Matthias Ringwald on 4/29/09. 36 * 37 */ 38 39 #include "config.h" 40 41 #include "hci.h" 42 43 #include <stdarg.h> 44 #include <string.h> 45 #include <stdio.h> 46 47 #ifndef EMBEDDED 48 #include <unistd.h> // gethostbyname 49 #include <btstack/version.h> 50 #endif 51 52 #include "btstack_memory.h" 53 #include "debug.h" 54 #include "hci_dump.h" 55 56 #include <btstack/hci_cmds.h> 57 58 #define HCI_CONNECTION_TIMEOUT_MS 10000 59 60 #ifdef USE_BLUETOOL 61 #include "bt_control_iphone.h" 62 #endif 63 64 static void hci_update_scan_enable(void); 65 66 // the STACK is here 67 static hci_stack_t hci_stack; 68 69 /** 70 * get connection for a given handle 71 * 72 * @return connection OR NULL, if not found 73 */ 74 hci_connection_t * connection_for_handle(hci_con_handle_t con_handle){ 75 linked_item_t *it; 76 for (it = (linked_item_t *) hci_stack.connections; it ; it = it->next){ 77 if ( ((hci_connection_t *) it)->con_handle == con_handle){ 78 return (hci_connection_t *) it; 79 } 80 } 81 return NULL; 82 } 83 84 static void hci_connection_timeout_handler(timer_source_t *timer){ 85 hci_connection_t * connection = linked_item_get_user(&timer->item); 86 #ifdef HAVE_TIME 87 struct timeval tv; 88 gettimeofday(&tv, NULL); 89 if (tv.tv_sec >= connection->timestamp.tv_sec + HCI_CONNECTION_TIMEOUT_MS/1000) { 90 // connections might be timed out 91 hci_emit_l2cap_check_timeout(connection); 92 } 93 #endif 94 #ifdef HAVE_TICK 95 if (embedded_get_ticks() > connection->timestamp + embedded_ticks_for_ms(HCI_CONNECTION_TIMEOUT_MS)){ 96 // connections might be timed out 97 hci_emit_l2cap_check_timeout(connection); 98 } 99 #endif 100 run_loop_set_timer(timer, HCI_CONNECTION_TIMEOUT_MS); 101 run_loop_add_timer(timer); 102 } 103 104 static void hci_connection_timestamp(hci_connection_t *connection){ 105 #ifdef HAVE_TIME 106 gettimeofday(&connection->timestamp, NULL); 107 #endif 108 #ifdef HAVE_TICK 109 connection->timestamp = embedded_get_ticks(); 110 #endif 111 } 112 113 /** 114 * create connection for given address 115 * 116 * @return connection OR NULL, if no memory left 117 */ 118 static hci_connection_t * create_connection_for_addr(bd_addr_t addr){ 119 hci_connection_t * conn = btstack_memory_hci_connection_get(); 120 if (!conn) return NULL; 121 BD_ADDR_COPY(conn->address, addr); 122 conn->con_handle = 0xffff; 123 conn->authentication_flags = AUTH_FLAGS_NONE; 124 linked_item_set_user(&conn->timeout.item, conn); 125 conn->timeout.process = hci_connection_timeout_handler; 126 hci_connection_timestamp(conn); 127 conn->acl_recombination_length = 0; 128 conn->acl_recombination_pos = 0; 129 conn->num_acl_packets_sent = 0; 130 linked_list_add(&hci_stack.connections, (linked_item_t *) conn); 131 return conn; 132 } 133 134 /** 135 * get connection for given address 136 * 137 * @return connection OR NULL, if not found 138 */ 139 static hci_connection_t * connection_for_address(bd_addr_t address){ 140 linked_item_t *it; 141 for (it = (linked_item_t *) hci_stack.connections; it ; it = it->next){ 142 if ( ! BD_ADDR_CMP( ((hci_connection_t *) it)->address, address) ){ 143 return (hci_connection_t *) it; 144 } 145 } 146 return NULL; 147 } 148 149 /** 150 * add authentication flags and reset timer 151 */ 152 static void hci_add_connection_flags_for_flipped_bd_addr(uint8_t *bd_addr, hci_authentication_flags_t flags){ 153 bd_addr_t addr; 154 bt_flip_addr(addr, *(bd_addr_t *) bd_addr); 155 hci_connection_t * conn = connection_for_address(addr); 156 if (conn) { 157 conn->authentication_flags |= flags; 158 hci_connection_timestamp(conn); 159 } 160 } 161 162 int hci_authentication_active_for_handle(hci_con_handle_t handle){ 163 hci_connection_t * conn = connection_for_handle(handle); 164 if (!conn) return 0; 165 if (!conn->authentication_flags) return 0; 166 if (conn->authentication_flags & SENT_LINK_KEY_REPLY) return 0; 167 if (conn->authentication_flags & RECV_LINK_KEY_NOTIFICATION) return 0; 168 return 1; 169 } 170 171 void hci_drop_link_key_for_bd_addr(bd_addr_t *addr){ 172 if (hci_stack.remote_device_db) { 173 hci_stack.remote_device_db->delete_link_key(addr); 174 } 175 } 176 177 178 /** 179 * count connections 180 */ 181 static int nr_hci_connections(void){ 182 int count = 0; 183 linked_item_t *it; 184 for (it = (linked_item_t *) hci_stack.connections; it ; it = it->next, count++); 185 return count; 186 } 187 188 /** 189 * Dummy handler called by HCI 190 */ 191 static void dummy_handler(uint8_t packet_type, uint8_t *packet, uint16_t size){ 192 } 193 194 uint8_t hci_number_outgoing_packets(hci_con_handle_t handle){ 195 hci_connection_t * connection = connection_for_handle(handle); 196 if (!connection) { 197 log_error("hci_number_outgoing_packets connectino for handle %u does not exist!\n", handle); 198 return 0; 199 } 200 return connection->num_acl_packets_sent; 201 } 202 203 uint8_t hci_number_free_acl_slots(){ 204 uint8_t free_slots = hci_stack.total_num_acl_packets; 205 linked_item_t *it; 206 for (it = (linked_item_t *) hci_stack.connections; it ; it = it->next){ 207 hci_connection_t * connection = (hci_connection_t *) it; 208 if (free_slots < connection->num_acl_packets_sent) { 209 log_error("hci_number_free_acl_slots: sum of outgoing packets > total acl packets!\n"); 210 return 0; 211 } 212 free_slots -= connection->num_acl_packets_sent; 213 } 214 return free_slots; 215 } 216 217 int hci_can_send_packet_now(uint8_t packet_type){ 218 219 // check for async hci transport implementations 220 if (hci_stack.hci_transport->can_send_packet_now){ 221 if (!hci_stack.hci_transport->can_send_packet_now(packet_type)){ 222 return 0; 223 } 224 } 225 226 // check regular Bluetooth flow control 227 switch (packet_type) { 228 case HCI_ACL_DATA_PACKET: 229 return hci_number_free_acl_slots(); 230 case HCI_COMMAND_DATA_PACKET: 231 return hci_stack.num_cmd_packets; 232 default: 233 return 0; 234 } 235 } 236 237 int hci_send_acl_packet(uint8_t *packet, int size){ 238 239 // check for free places on BT module 240 if (!hci_number_free_acl_slots()) return BTSTACK_ACL_BUFFERS_FULL; 241 242 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 243 hci_connection_t *connection = connection_for_handle( con_handle); 244 if (!connection) return 0; 245 hci_connection_timestamp(connection); 246 247 // count packet 248 connection->num_acl_packets_sent++; 249 // log_info("hci_send_acl_packet - handle %u, sent %u\n", connection->con_handle, connection->num_acl_packets_sent); 250 251 // send packet 252 int err = hci_stack.hci_transport->send_packet(HCI_ACL_DATA_PACKET, packet, size); 253 254 return err; 255 } 256 257 static void acl_handler(uint8_t *packet, int size){ 258 259 // get info 260 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 261 hci_connection_t *conn = connection_for_handle(con_handle); 262 uint8_t acl_flags = READ_ACL_FLAGS(packet); 263 uint16_t acl_length = READ_ACL_LENGTH(packet); 264 265 // ignore non-registered handle 266 if (!conn){ 267 log_error( "hci.c: acl_handler called with non-registered handle %u!\n" , con_handle); 268 return; 269 } 270 271 // update idle timestamp 272 hci_connection_timestamp(conn); 273 274 // handle different packet types 275 switch (acl_flags & 0x03) { 276 277 case 0x01: // continuation fragment 278 279 // sanity check 280 if (conn->acl_recombination_pos == 0) { 281 log_error( "ACL Cont Fragment but no first fragment for handle 0x%02x\n", con_handle); 282 return; 283 } 284 285 // append fragment payload (header already stored) 286 memcpy(&conn->acl_recombination_buffer[conn->acl_recombination_pos], &packet[4], acl_length ); 287 conn->acl_recombination_pos += acl_length; 288 289 // log_error( "ACL Cont Fragment: acl_len %u, combined_len %u, l2cap_len %u\n", acl_length, 290 // conn->acl_recombination_pos, conn->acl_recombination_length); 291 292 // forward complete L2CAP packet if complete. 293 if (conn->acl_recombination_pos >= conn->acl_recombination_length + 4 + 4){ // pos already incl. ACL header 294 295 hci_stack.packet_handler(HCI_ACL_DATA_PACKET, conn->acl_recombination_buffer, conn->acl_recombination_pos); 296 // reset recombination buffer 297 conn->acl_recombination_length = 0; 298 conn->acl_recombination_pos = 0; 299 } 300 break; 301 302 case 0x02: { // first fragment 303 304 // sanity check 305 if (conn->acl_recombination_pos) { 306 log_error( "ACL First Fragment but data in buffer for handle 0x%02x\n", con_handle); 307 return; 308 } 309 310 // peek into L2CAP packet! 311 uint16_t l2cap_length = READ_L2CAP_LENGTH( packet ); 312 313 // log_error( "ACL First Fragment: acl_len %u, l2cap_len %u\n", acl_length, l2cap_length); 314 315 // compare fragment size to L2CAP packet size 316 if (acl_length >= l2cap_length + 4){ 317 318 // forward fragment as L2CAP packet 319 hci_stack.packet_handler(HCI_ACL_DATA_PACKET, packet, acl_length + 4); 320 321 } else { 322 // store first fragment and tweak acl length for complete package 323 memcpy(conn->acl_recombination_buffer, packet, acl_length + 4); 324 conn->acl_recombination_pos = acl_length + 4; 325 conn->acl_recombination_length = l2cap_length; 326 bt_store_16(conn->acl_recombination_buffer, 2, l2cap_length +4); 327 } 328 break; 329 330 } 331 default: 332 log_error( "hci.c: acl_handler called with invalid packet boundary flags %u\n", acl_flags & 0x03); 333 return; 334 } 335 336 // execute main loop 337 hci_run(); 338 } 339 340 static void hci_shutdown_connection(hci_connection_t *conn){ 341 log_info("Connection closed: handle %u, %s\n", conn->con_handle, bd_addr_to_str(conn->address)); 342 343 // cancel all l2cap connections 344 hci_emit_disconnection_complete(conn->con_handle, 0x16); // terminated by local host 345 346 run_loop_remove_timer(&conn->timeout); 347 348 linked_list_remove(&hci_stack.connections, (linked_item_t *) conn); 349 btstack_memory_hci_connection_free( conn ); 350 351 // now it's gone 352 hci_emit_nr_connections_changed(); 353 } 354 355 static const uint16_t packet_type_sizes[] = { 356 0, HCI_ACL_2DH1_SIZE, HCI_ACL_3DH1_SIZE, HCI_ACL_DM1_SIZE, 357 HCI_ACL_DH1_SIZE, 0, 0, 0, 358 HCI_ACL_2DH3_SIZE, HCI_ACL_3DH3_SIZE, HCI_ACL_DM3_SIZE, HCI_ACL_DH3_SIZE, 359 HCI_ACL_2DH5_SIZE, HCI_ACL_3DH5_SIZE, HCI_ACL_DM5_SIZE, HCI_ACL_DH5_SIZE 360 }; 361 362 static uint16_t hci_acl_packet_types_for_buffer_size(uint16_t buffer_size){ 363 uint16_t packet_types = 0; 364 int i; 365 for (i=0;i<16;i++){ 366 if (packet_type_sizes[i] == 0) continue; 367 if (packet_type_sizes[i] <= buffer_size){ 368 packet_types |= 1 << i; 369 } 370 } 371 // flip bits for "may not be used" 372 packet_types ^= 0x3306; 373 return packet_types; 374 } 375 376 uint16_t hci_usable_acl_packet_types(void){ 377 return hci_stack.packet_types; 378 } 379 380 uint8_t* hci_get_outgoing_acl_packet_buffer(void){ 381 // hci packet buffer is >= acl data packet length 382 return hci_stack.hci_packet_buffer; 383 } 384 385 uint16_t hci_max_acl_data_packet_length(){ 386 return hci_stack.acl_data_packet_length; 387 } 388 389 // avoid huge local variables 390 #ifndef EMBEDDED 391 static device_name_t device_name; 392 #endif 393 static void event_handler(uint8_t *packet, int size){ 394 bd_addr_t addr; 395 uint8_t link_type; 396 hci_con_handle_t handle; 397 hci_connection_t * conn; 398 int i; 399 400 // printf("HCI:EVENT:%02x\n", packet[0]); 401 402 switch (packet[0]) { 403 404 case HCI_EVENT_COMMAND_COMPLETE: 405 // get num cmd packets 406 // log_info("HCI_EVENT_COMMAND_COMPLETE cmds old %u - new %u\n", hci_stack.num_cmd_packets, packet[2]); 407 hci_stack.num_cmd_packets = packet[2]; 408 409 if (COMMAND_COMPLETE_EVENT(packet, hci_read_buffer_size)){ 410 // from offset 5 411 // status 412 // "The HC_ACL_Data_Packet_Length return parameter will be used to determine the size of the L2CAP segments contained in ACL Data Packets" 413 hci_stack.acl_data_packet_length = READ_BT_16(packet, 6); 414 // ignore: SCO data packet len (8) 415 hci_stack.total_num_acl_packets = packet[9]; 416 // ignore: total num SCO packets 417 if (hci_stack.state == HCI_STATE_INITIALIZING){ 418 // determine usable ACL payload size 419 if (HCI_ACL_PAYLOAD_SIZE < hci_stack.acl_data_packet_length){ 420 hci_stack.acl_data_packet_length = HCI_ACL_PAYLOAD_SIZE; 421 } 422 // determine usable ACL packet types 423 hci_stack.packet_types = hci_acl_packet_types_for_buffer_size(hci_stack.acl_data_packet_length); 424 425 log_error("hci_read_buffer_size: used size %u, count %u, packet types %04x\n", 426 hci_stack.acl_data_packet_length, hci_stack.total_num_acl_packets, hci_stack.packet_types); 427 } 428 } 429 // Dump local address 430 if (COMMAND_COMPLETE_EVENT(packet, hci_read_bd_addr)) { 431 bd_addr_t addr; 432 bt_flip_addr(addr, &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE + 1]); 433 log_info("Local Address, Status: 0x%02x: Addr: %s\n", 434 packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE], bd_addr_to_str(addr)); 435 } 436 if (COMMAND_COMPLETE_EVENT(packet, hci_write_scan_enable)){ 437 hci_emit_discoverable_enabled(hci_stack.discoverable); 438 } 439 break; 440 441 case HCI_EVENT_COMMAND_STATUS: 442 // get num cmd packets 443 // log_info("HCI_EVENT_COMMAND_STATUS cmds - old %u - new %u\n", hci_stack.num_cmd_packets, packet[3]); 444 hci_stack.num_cmd_packets = packet[3]; 445 break; 446 447 case HCI_EVENT_NUMBER_OF_COMPLETED_PACKETS: 448 for (i=0; i<packet[2];i++){ 449 handle = READ_BT_16(packet, 3 + 2*i); 450 uint16_t num_packets = READ_BT_16(packet, 3 + packet[2]*2 + 2*i); 451 conn = connection_for_handle(handle); 452 if (!conn){ 453 log_error("hci_number_completed_packet lists unused con handle %u\n", handle); 454 continue; 455 } 456 conn->num_acl_packets_sent -= num_packets; 457 // log_info("hci_number_completed_packet %u processed for handle %u, outstanding %u\n", num_packets, handle, conn->num_acl_packets_sent); 458 } 459 break; 460 461 case HCI_EVENT_CONNECTION_REQUEST: 462 bt_flip_addr(addr, &packet[2]); 463 // TODO: eval COD 8-10 464 link_type = packet[11]; 465 log_info("Connection_incoming: %s, type %u\n", bd_addr_to_str(addr), link_type); 466 if (link_type == 1) { // ACL 467 conn = connection_for_address(addr); 468 if (!conn) { 469 conn = create_connection_for_addr(addr); 470 } 471 if (!conn) { 472 // CONNECTION REJECTED DUE TO LIMITED RESOURCES (0X0D) 473 hci_stack.decline_reason = 0x0d; 474 BD_ADDR_COPY(hci_stack.decline_addr, addr); 475 break; 476 } 477 conn->state = RECEIVED_CONNECTION_REQUEST; 478 hci_run(); 479 } else { 480 // SYNCHRONOUS CONNECTION LIMIT TO A DEVICE EXCEEDED (0X0A) 481 hci_stack.decline_reason = 0x0a; 482 BD_ADDR_COPY(hci_stack.decline_addr, addr); 483 } 484 break; 485 486 case HCI_EVENT_CONNECTION_COMPLETE: 487 // Connection management 488 bt_flip_addr(addr, &packet[5]); 489 log_info("Connection_complete (status=%u) %s\n", packet[2], bd_addr_to_str(addr)); 490 conn = connection_for_address(addr); 491 if (conn) { 492 if (!packet[2]){ 493 conn->state = OPEN; 494 conn->con_handle = READ_BT_16(packet, 3); 495 496 // restart timer 497 run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 498 run_loop_add_timer(&conn->timeout); 499 500 log_info("New connection: handle %u, %s\n", conn->con_handle, bd_addr_to_str(conn->address)); 501 502 hci_emit_nr_connections_changed(); 503 } else { 504 // connection failed, remove entry 505 linked_list_remove(&hci_stack.connections, (linked_item_t *) conn); 506 btstack_memory_hci_connection_free( conn ); 507 508 // if authentication error, also delete link key 509 if (packet[2] == 0x05) { 510 hci_drop_link_key_for_bd_addr(&addr); 511 } 512 } 513 } 514 break; 515 516 case HCI_EVENT_LINK_KEY_REQUEST: 517 log_info("HCI_EVENT_LINK_KEY_REQUEST\n"); 518 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], RECV_LINK_KEY_REQUEST); 519 if (!hci_stack.remote_device_db) break; 520 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], HANDLE_LINK_KEY_REQUEST); 521 hci_run(); 522 // request handled by hci_run() as HANDLE_LINK_KEY_REQUEST gets set 523 return; 524 525 case HCI_EVENT_LINK_KEY_NOTIFICATION: 526 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], RECV_LINK_KEY_NOTIFICATION); 527 if (!hci_stack.remote_device_db) break; 528 bt_flip_addr(addr, &packet[2]); 529 hci_stack.remote_device_db->put_link_key(&addr, (link_key_t *) &packet[8]); 530 // still forward event to allow dismiss of pairing dialog 531 break; 532 533 case HCI_EVENT_PIN_CODE_REQUEST: 534 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], RECV_PIN_CODE_REQUEST); 535 // PIN CODE REQUEST means the link key request didn't succee -> delete stored link key 536 if (!hci_stack.remote_device_db) break; 537 bt_flip_addr(addr, &packet[2]); 538 hci_stack.remote_device_db->delete_link_key(&addr); 539 break; 540 541 #ifndef EMBEDDED 542 case HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE: 543 if (!hci_stack.remote_device_db) break; 544 if (packet[2]) break; // status not ok 545 bt_flip_addr(addr, &packet[3]); 546 // fix for invalid remote names - terminate on 0xff 547 for (i=0; i<248;i++){ 548 if (packet[9+i] == 0xff){ 549 packet[9+i] = 0; 550 break; 551 } 552 } 553 memset(&device_name, 0, sizeof(device_name_t)); 554 strncpy((char*) device_name, (char*) &packet[9], 248); 555 hci_stack.remote_device_db->put_name(&addr, &device_name); 556 break; 557 558 case HCI_EVENT_INQUIRY_RESULT: 559 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 560 if (!hci_stack.remote_device_db) break; 561 // first send inq result packet 562 hci_stack.packet_handler(HCI_EVENT_PACKET, packet, size); 563 // then send cached remote names 564 for (i=0; i<packet[2];i++){ 565 bt_flip_addr(addr, &packet[3+i*6]); 566 if (hci_stack.remote_device_db->get_name(&addr, &device_name)){ 567 hci_emit_remote_name_cached(&addr, &device_name); 568 } 569 } 570 return; 571 #endif 572 573 case HCI_EVENT_DISCONNECTION_COMPLETE: 574 if (!packet[2]){ 575 handle = READ_BT_16(packet, 3); 576 hci_connection_t * conn = connection_for_handle(handle); 577 if (conn) { 578 hci_shutdown_connection(conn); 579 } 580 } 581 break; 582 583 case HCI_EVENT_HARDWARE_ERROR: 584 if(hci_stack.control->hw_error){ 585 (*hci_stack.control->hw_error)(); 586 } 587 break; 588 589 #ifdef HAVE_BLE 590 case HCI_EVENT_LE_META: 591 switch (packet[2]) { 592 case HCI_SUBEVENT_LE_CONNECTION_COMPLETE: 593 // Connection management 594 bt_flip_addr(addr, &packet[8]); 595 log_info("LE Connection_complete (status=%u) %s\n", packet[3], bd_addr_to_str(addr)); 596 // LE connections are auto-accepted, so just create a connection if there isn't one already 597 conn = connection_for_address(addr); 598 if (packet[3]){ 599 if (conn){ 600 // outgoing connection failed, remove entry 601 linked_list_remove(&hci_stack.connections, (linked_item_t *) conn); 602 btstack_memory_hci_connection_free( conn ); 603 604 } 605 // if authentication error, also delete link key 606 if (packet[3] == 0x05) { 607 hci_drop_link_key_for_bd_addr(&addr); 608 } 609 break; 610 } 611 if (!conn){ 612 conn = create_connection_for_addr(addr); 613 } 614 if (!conn){ 615 // no memory 616 break; 617 } 618 619 conn->state = OPEN; 620 conn->con_handle = READ_BT_16(packet, 4); 621 622 // TODO: store - role, peer address type, conn_interval, conn_latency, supervision timeout, master clock 623 624 // restart timer 625 // run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 626 // run_loop_add_timer(&conn->timeout); 627 628 log_info("New connection: handle %u, %s\n", conn->con_handle, bd_addr_to_str(conn->address)); 629 630 hci_emit_nr_connections_changed(); 631 break; 632 633 default: 634 break; 635 } 636 break; 637 #endif 638 639 default: 640 break; 641 } 642 643 // handle BT initialization 644 if (hci_stack.state == HCI_STATE_INITIALIZING){ 645 // handle H4 synchronization loss on restart 646 // if (hci_stack.substate == 1 && packet[0] == HCI_EVENT_HARDWARE_ERROR){ 647 // hci_stack.substate = 0; 648 // } 649 // handle normal init sequence 650 if (hci_stack.substate % 2){ 651 // odd: waiting for event 652 if (packet[0] == HCI_EVENT_COMMAND_COMPLETE){ 653 hci_stack.substate++; 654 } 655 } 656 } 657 658 // help with BT sleep 659 if (hci_stack.state == HCI_STATE_FALLING_ASLEEP 660 && hci_stack.substate == 1 661 && COMMAND_COMPLETE_EVENT(packet, hci_write_scan_enable)){ 662 hci_stack.substate++; 663 } 664 665 hci_stack.packet_handler(HCI_EVENT_PACKET, packet, size); 666 667 // execute main loop 668 hci_run(); 669 } 670 671 void packet_handler(uint8_t packet_type, uint8_t *packet, uint16_t size){ 672 switch (packet_type) { 673 case HCI_EVENT_PACKET: 674 event_handler(packet, size); 675 break; 676 case HCI_ACL_DATA_PACKET: 677 acl_handler(packet, size); 678 break; 679 default: 680 break; 681 } 682 } 683 684 /** Register HCI packet handlers */ 685 void hci_register_packet_handler(void (*handler)(uint8_t packet_type, uint8_t *packet, uint16_t size)){ 686 hci_stack.packet_handler = handler; 687 } 688 689 void hci_init(hci_transport_t *transport, void *config, bt_control_t *control, remote_device_db_t const* remote_device_db){ 690 691 // reference to use transport layer implementation 692 hci_stack.hci_transport = transport; 693 694 // references to used control implementation 695 hci_stack.control = control; 696 697 // reference to used config 698 hci_stack.config = config; 699 700 // no connections yet 701 hci_stack.connections = NULL; 702 hci_stack.discoverable = 0; 703 hci_stack.connectable = 0; 704 705 // no pending cmds 706 hci_stack.decline_reason = 0; 707 hci_stack.new_scan_enable_value = 0xff; 708 709 // higher level handler 710 hci_stack.packet_handler = dummy_handler; 711 712 // store and open remote device db 713 hci_stack.remote_device_db = remote_device_db; 714 if (hci_stack.remote_device_db) { 715 hci_stack.remote_device_db->open(); 716 } 717 718 // max acl payload size defined in config.h 719 hci_stack.acl_data_packet_length = HCI_ACL_PAYLOAD_SIZE; 720 721 // register packet handlers with transport 722 transport->register_packet_handler(&packet_handler); 723 724 hci_stack.state = HCI_STATE_OFF; 725 } 726 727 void hci_close(){ 728 // close remote device db 729 if (hci_stack.remote_device_db) { 730 hci_stack.remote_device_db->close(); 731 } 732 while (hci_stack.connections) { 733 hci_shutdown_connection((hci_connection_t *) hci_stack.connections); 734 } 735 hci_power_control(HCI_POWER_OFF); 736 } 737 738 // State-Module-Driver overview 739 // state module low-level 740 // HCI_STATE_OFF off close 741 // HCI_STATE_INITIALIZING, on open 742 // HCI_STATE_WORKING, on open 743 // HCI_STATE_HALTING, on open 744 // HCI_STATE_SLEEPING, off/sleep close 745 // HCI_STATE_FALLING_ASLEEP on open 746 747 static int hci_power_control_on(void){ 748 749 // power on 750 int err = 0; 751 if (hci_stack.control && hci_stack.control->on){ 752 err = (*hci_stack.control->on)(hci_stack.config); 753 } 754 if (err){ 755 log_error( "POWER_ON failed\n"); 756 hci_emit_hci_open_failed(); 757 return err; 758 } 759 760 // open low-level device 761 err = hci_stack.hci_transport->open(hci_stack.config); 762 if (err){ 763 log_error( "HCI_INIT failed, turning Bluetooth off again\n"); 764 if (hci_stack.control && hci_stack.control->off){ 765 (*hci_stack.control->off)(hci_stack.config); 766 } 767 hci_emit_hci_open_failed(); 768 return err; 769 } 770 return 0; 771 } 772 773 static void hci_power_control_off(void){ 774 775 log_info("hci_power_control_off\n"); 776 777 // close low-level device 778 hci_stack.hci_transport->close(hci_stack.config); 779 780 log_info("hci_power_control_off - hci_transport closed\n"); 781 782 // power off 783 if (hci_stack.control && hci_stack.control->off){ 784 (*hci_stack.control->off)(hci_stack.config); 785 } 786 787 log_info("hci_power_control_off - control closed\n"); 788 789 hci_stack.state = HCI_STATE_OFF; 790 } 791 792 static void hci_power_control_sleep(void){ 793 794 log_info("hci_power_control_sleep\n"); 795 796 #if 0 797 // don't close serial port during sleep 798 799 // close low-level device 800 hci_stack.hci_transport->close(hci_stack.config); 801 #endif 802 803 // sleep mode 804 if (hci_stack.control && hci_stack.control->sleep){ 805 (*hci_stack.control->sleep)(hci_stack.config); 806 } 807 808 hci_stack.state = HCI_STATE_SLEEPING; 809 } 810 811 static int hci_power_control_wake(void){ 812 813 log_info("hci_power_control_wake\n"); 814 815 // wake on 816 if (hci_stack.control && hci_stack.control->wake){ 817 (*hci_stack.control->wake)(hci_stack.config); 818 } 819 820 #if 0 821 // open low-level device 822 int err = hci_stack.hci_transport->open(hci_stack.config); 823 if (err){ 824 log_error( "HCI_INIT failed, turning Bluetooth off again\n"); 825 if (hci_stack.control && hci_stack.control->off){ 826 (*hci_stack.control->off)(hci_stack.config); 827 } 828 hci_emit_hci_open_failed(); 829 return err; 830 } 831 #endif 832 833 return 0; 834 } 835 836 837 int hci_power_control(HCI_POWER_MODE power_mode){ 838 839 log_info("hci_power_control: %u, current mode %u\n", power_mode, hci_stack.state); 840 841 int err = 0; 842 switch (hci_stack.state){ 843 844 case HCI_STATE_OFF: 845 switch (power_mode){ 846 case HCI_POWER_ON: 847 err = hci_power_control_on(); 848 if (err) return err; 849 // set up state machine 850 hci_stack.num_cmd_packets = 1; // assume that one cmd can be sent 851 hci_stack.state = HCI_STATE_INITIALIZING; 852 hci_stack.substate = 0; 853 break; 854 case HCI_POWER_OFF: 855 // do nothing 856 break; 857 case HCI_POWER_SLEEP: 858 // do nothing (with SLEEP == OFF) 859 break; 860 } 861 break; 862 863 case HCI_STATE_INITIALIZING: 864 switch (power_mode){ 865 case HCI_POWER_ON: 866 // do nothing 867 break; 868 case HCI_POWER_OFF: 869 // no connections yet, just turn it off 870 hci_power_control_off(); 871 break; 872 case HCI_POWER_SLEEP: 873 // no connections yet, just turn it off 874 hci_power_control_sleep(); 875 break; 876 } 877 break; 878 879 case HCI_STATE_WORKING: 880 switch (power_mode){ 881 case HCI_POWER_ON: 882 // do nothing 883 break; 884 case HCI_POWER_OFF: 885 // see hci_run 886 hci_stack.state = HCI_STATE_HALTING; 887 break; 888 case HCI_POWER_SLEEP: 889 // see hci_run 890 hci_stack.state = HCI_STATE_FALLING_ASLEEP; 891 hci_stack.substate = 0; 892 break; 893 } 894 break; 895 896 case HCI_STATE_HALTING: 897 switch (power_mode){ 898 case HCI_POWER_ON: 899 // set up state machine 900 hci_stack.state = HCI_STATE_INITIALIZING; 901 hci_stack.substate = 0; 902 break; 903 case HCI_POWER_OFF: 904 // do nothing 905 break; 906 case HCI_POWER_SLEEP: 907 // see hci_run 908 hci_stack.state = HCI_STATE_FALLING_ASLEEP; 909 hci_stack.substate = 0; 910 break; 911 } 912 break; 913 914 case HCI_STATE_FALLING_ASLEEP: 915 switch (power_mode){ 916 case HCI_POWER_ON: 917 918 #if defined(USE_POWERMANAGEMENT) && defined(USE_BLUETOOL) 919 // nothing to do, if H4 supports power management 920 if (bt_control_iphone_power_management_enabled()){ 921 hci_stack.state = HCI_STATE_INITIALIZING; 922 hci_stack.substate = 6; 923 break; 924 } 925 #endif 926 // set up state machine 927 hci_stack.num_cmd_packets = 1; // assume that one cmd can be sent 928 hci_stack.state = HCI_STATE_INITIALIZING; 929 hci_stack.substate = 0; 930 break; 931 case HCI_POWER_OFF: 932 // see hci_run 933 hci_stack.state = HCI_STATE_HALTING; 934 break; 935 case HCI_POWER_SLEEP: 936 // do nothing 937 break; 938 } 939 break; 940 941 case HCI_STATE_SLEEPING: 942 switch (power_mode){ 943 case HCI_POWER_ON: 944 945 #if defined(USE_POWERMANAGEMENT) && defined(USE_BLUETOOL) 946 // nothing to do, if H4 supports power management 947 if (bt_control_iphone_power_management_enabled()){ 948 hci_stack.state = HCI_STATE_INITIALIZING; 949 hci_stack.substate = 6; 950 hci_update_scan_enable(); 951 break; 952 } 953 #endif 954 err = hci_power_control_wake(); 955 if (err) return err; 956 // set up state machine 957 hci_stack.num_cmd_packets = 1; // assume that one cmd can be sent 958 hci_stack.state = HCI_STATE_INITIALIZING; 959 hci_stack.substate = 0; 960 break; 961 case HCI_POWER_OFF: 962 hci_stack.state = HCI_STATE_HALTING; 963 break; 964 case HCI_POWER_SLEEP: 965 // do nothing 966 break; 967 } 968 break; 969 } 970 971 // create internal event 972 hci_emit_state(); 973 974 // trigger next/first action 975 hci_run(); 976 977 return 0; 978 } 979 980 static void hci_update_scan_enable(void){ 981 // 2 = page scan, 1 = inq scan 982 hci_stack.new_scan_enable_value = hci_stack.connectable << 1 | hci_stack.discoverable; 983 hci_run(); 984 } 985 986 void hci_discoverable_control(uint8_t enable){ 987 if (enable) enable = 1; // normalize argument 988 989 if (hci_stack.discoverable == enable){ 990 hci_emit_discoverable_enabled(hci_stack.discoverable); 991 return; 992 } 993 994 hci_stack.discoverable = enable; 995 hci_update_scan_enable(); 996 } 997 998 void hci_connectable_control(uint8_t enable){ 999 if (enable) enable = 1; // normalize argument 1000 1001 // don't emit event 1002 if (hci_stack.connectable == enable) return; 1003 1004 hci_stack.connectable = enable; 1005 hci_update_scan_enable(); 1006 } 1007 1008 void hci_run(){ 1009 1010 hci_connection_t * connection; 1011 linked_item_t * it; 1012 1013 if (!hci_can_send_packet_now(HCI_COMMAND_DATA_PACKET)) return; 1014 1015 // global/non-connection oriented commands 1016 1017 // decline incoming connections 1018 if (hci_stack.decline_reason){ 1019 uint8_t reason = hci_stack.decline_reason; 1020 hci_stack.decline_reason = 0; 1021 hci_send_cmd(&hci_reject_connection_request, hci_stack.decline_addr, reason); 1022 } 1023 1024 if (!hci_can_send_packet_now(HCI_COMMAND_DATA_PACKET)) return; 1025 1026 // send scan enable 1027 if (hci_stack.new_scan_enable_value != 0xff){ 1028 hci_send_cmd(&hci_write_scan_enable, hci_stack.new_scan_enable_value); 1029 hci_stack.new_scan_enable_value = 0xff; 1030 } 1031 1032 // send pending HCI commands 1033 for (it = (linked_item_t *) hci_stack.connections; it ; it = it->next){ 1034 1035 if (!hci_can_send_packet_now(HCI_COMMAND_DATA_PACKET)) return; 1036 1037 connection = (hci_connection_t *) it; 1038 1039 if (connection->state == RECEIVED_CONNECTION_REQUEST){ 1040 log_info("sending hci_accept_connection_request\n"); 1041 hci_send_cmd(&hci_accept_connection_request, connection->address, 1); 1042 connection->state = ACCEPTED_CONNECTION_REQUEST; 1043 } 1044 1045 if (!hci_can_send_packet_now(HCI_COMMAND_DATA_PACKET)) return; 1046 1047 if (connection->authentication_flags & HANDLE_LINK_KEY_REQUEST){ 1048 link_key_t link_key; 1049 log_info("responding to link key request\n"); 1050 if ( hci_stack.remote_device_db->get_link_key( &connection->address, &link_key)){ 1051 hci_send_cmd(&hci_link_key_request_reply, connection->address, &link_key); 1052 } else { 1053 hci_send_cmd(&hci_link_key_request_negative_reply, connection->address); 1054 } 1055 connection->authentication_flags &= ~HANDLE_LINK_KEY_REQUEST; 1056 } 1057 } 1058 1059 if (!hci_can_send_packet_now(HCI_COMMAND_DATA_PACKET)) return; 1060 1061 switch (hci_stack.state){ 1062 case HCI_STATE_INITIALIZING: 1063 // log_info("hci_init: substate %u\n", hci_stack.substate); 1064 if (hci_stack.substate % 2) { 1065 // odd: waiting for command completion 1066 return; 1067 } 1068 switch (hci_stack.substate >> 1){ 1069 case 0: // RESET 1070 hci_send_cmd(&hci_reset); 1071 if (hci_stack.config == 0 || ((hci_uart_config_t *)hci_stack.config)->baudrate_main == 0){ 1072 // skip baud change 1073 hci_stack.substate = 4; // >> 1 = 2 1074 } 1075 break; 1076 case 1: // SEND BAUD CHANGE 1077 hci_stack.control->baudrate_cmd(hci_stack.config, ((hci_uart_config_t *)hci_stack.config)->baudrate_main, hci_stack.hci_packet_buffer); 1078 hci_send_cmd_packet(hci_stack.hci_packet_buffer, 3 + hci_stack.hci_packet_buffer[2]); 1079 break; 1080 case 2: // LOCAL BAUD CHANGE 1081 hci_stack.hci_transport->set_baudrate(((hci_uart_config_t *)hci_stack.config)->baudrate_main); 1082 hci_stack.substate += 2; 1083 // break missing here for fall through 1084 1085 case 3: 1086 // custom initialization 1087 if (hci_stack.control && hci_stack.control->next_cmd){ 1088 int valid_cmd = (*hci_stack.control->next_cmd)(hci_stack.config, hci_stack.hci_packet_buffer); 1089 if (valid_cmd){ 1090 int size = 3 + hci_stack.hci_packet_buffer[2]; 1091 hci_stack.hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, hci_stack.hci_packet_buffer, size); 1092 hci_stack.substate = 4; // more init commands 1093 break; 1094 } 1095 log_info("hci_run: init script done\n\r"); 1096 } 1097 // otherwise continue 1098 hci_send_cmd(&hci_read_bd_addr); 1099 break; 1100 case 4: 1101 hci_send_cmd(&hci_read_buffer_size); 1102 break; 1103 case 5: 1104 // ca. 15 sec 1105 hci_send_cmd(&hci_write_page_timeout, 0x6000); 1106 break; 1107 case 6: 1108 hci_send_cmd(&hci_write_scan_enable, (hci_stack.connectable << 1) | hci_stack.discoverable); // page scan 1109 break; 1110 case 7: 1111 #ifndef EMBEDDED 1112 { 1113 char hostname[30]; 1114 gethostname(hostname, 30); 1115 hostname[29] = '\0'; 1116 hci_send_cmd(&hci_write_local_name, hostname); 1117 break; 1118 } 1119 case 8: 1120 #ifdef USE_BLUETOOL 1121 hci_send_cmd(&hci_write_class_of_device, 0x007a020c); // Smartphone 1122 break; 1123 1124 case 9: 1125 #endif 1126 #endif 1127 // done. 1128 hci_stack.state = HCI_STATE_WORKING; 1129 hci_emit_state(); 1130 break; 1131 default: 1132 break; 1133 } 1134 hci_stack.substate++; 1135 break; 1136 1137 case HCI_STATE_HALTING: 1138 1139 log_info("HCI_STATE_HALTING\n"); 1140 // close all open connections 1141 connection = (hci_connection_t *) hci_stack.connections; 1142 if (connection){ 1143 1144 // send disconnect 1145 if (!hci_can_send_packet_now(HCI_COMMAND_DATA_PACKET)) return; 1146 1147 log_info("HCI_STATE_HALTING, connection %p, handle %u\n", connection, (uint16_t)connection->con_handle); 1148 hci_send_cmd(&hci_disconnect, connection->con_handle, 0x13); // remote closed connection 1149 1150 // send disconnected event right away - causes higher layer connections to get closed, too. 1151 hci_shutdown_connection(connection); 1152 return; 1153 } 1154 log_info("HCI_STATE_HALTING, calling off\n"); 1155 1156 // switch mode 1157 hci_power_control_off(); 1158 1159 log_info("HCI_STATE_HALTING, emitting state\n"); 1160 hci_emit_state(); 1161 log_info("HCI_STATE_HALTING, done\n"); 1162 break; 1163 1164 case HCI_STATE_FALLING_ASLEEP: 1165 switch(hci_stack.substate) { 1166 case 0: 1167 log_info("HCI_STATE_FALLING_ASLEEP\n"); 1168 // close all open connections 1169 connection = (hci_connection_t *) hci_stack.connections; 1170 1171 #if defined(USE_POWERMANAGEMENT) && defined(USE_BLUETOOL) 1172 // don't close connections, if H4 supports power management 1173 if (bt_control_iphone_power_management_enabled()){ 1174 connection = NULL; 1175 } 1176 #endif 1177 if (connection){ 1178 1179 // send disconnect 1180 if (!hci_can_send_packet_now(HCI_COMMAND_DATA_PACKET)) return; 1181 1182 log_info("HCI_STATE_FALLING_ASLEEP, connection %p, handle %u\n", connection, (uint16_t)connection->con_handle); 1183 hci_send_cmd(&hci_disconnect, connection->con_handle, 0x13); // remote closed connection 1184 1185 // send disconnected event right away - causes higher layer connections to get closed, too. 1186 hci_shutdown_connection(connection); 1187 return; 1188 } 1189 1190 // disable page and inquiry scan 1191 if (!hci_can_send_packet_now(HCI_COMMAND_DATA_PACKET)) return; 1192 1193 log_info("HCI_STATE_HALTING, disabling inq cans\n"); 1194 hci_send_cmd(&hci_write_scan_enable, hci_stack.connectable << 1); // drop inquiry scan but keep page scan 1195 1196 // continue in next sub state 1197 hci_stack.substate++; 1198 break; 1199 case 1: 1200 // wait for command complete "hci_write_scan_enable" in event_handler(); 1201 break; 1202 case 2: 1203 log_info("HCI_STATE_HALTING, calling sleep\n"); 1204 #if defined(USE_POWERMANAGEMENT) && defined(USE_BLUETOOL) 1205 // don't actually go to sleep, if H4 supports power management 1206 if (bt_control_iphone_power_management_enabled()){ 1207 // SLEEP MODE reached 1208 hci_stack.state = HCI_STATE_SLEEPING; 1209 hci_emit_state(); 1210 break; 1211 } 1212 #endif 1213 // switch mode 1214 hci_power_control_sleep(); // changes hci_stack.state to SLEEP 1215 hci_emit_state(); 1216 break; 1217 1218 default: 1219 break; 1220 } 1221 break; 1222 1223 default: 1224 break; 1225 } 1226 } 1227 1228 int hci_send_cmd_packet(uint8_t *packet, int size){ 1229 bd_addr_t addr; 1230 hci_connection_t * conn; 1231 // house-keeping 1232 1233 // create_connection? 1234 if (IS_COMMAND(packet, hci_create_connection)){ 1235 bt_flip_addr(addr, &packet[3]); 1236 log_info("Create_connection to %s\n", bd_addr_to_str(addr)); 1237 conn = connection_for_address(addr); 1238 if (conn) { 1239 // if connection exists 1240 if (conn->state == OPEN) { 1241 // and OPEN, emit connection complete command 1242 hci_emit_connection_complete(conn, 0); 1243 } 1244 // otherwise, just ignore as it is already in the open process 1245 return 0; // don't sent packet to controller 1246 1247 } 1248 // create connection struct and register, state = SENT_CREATE_CONNECTION 1249 conn = create_connection_for_addr(addr); 1250 if (!conn){ 1251 // notify client that alloc failed 1252 hci_emit_connection_complete(conn, BTSTACK_MEMORY_ALLOC_FAILED); 1253 return 0; // don't sent packet to controller 1254 } 1255 conn->state = SENT_CREATE_CONNECTION; 1256 } 1257 1258 if (IS_COMMAND(packet, hci_link_key_request_reply)){ 1259 hci_add_connection_flags_for_flipped_bd_addr(&packet[3], SENT_LINK_KEY_REPLY); 1260 } 1261 if (IS_COMMAND(packet, hci_link_key_request_negative_reply)){ 1262 hci_add_connection_flags_for_flipped_bd_addr(&packet[3], SENT_LINK_KEY_NEGATIVE_REQUEST); 1263 } 1264 if (IS_COMMAND(packet, hci_pin_code_request_reply)){ 1265 hci_add_connection_flags_for_flipped_bd_addr(&packet[3], SENT_PIN_CODE_REPLY); 1266 } 1267 if (IS_COMMAND(packet, hci_pin_code_request_negative_reply)){ 1268 hci_add_connection_flags_for_flipped_bd_addr(&packet[3], SENT_PIN_CODE_NEGATIVE_REPLY); 1269 } 1270 1271 if (IS_COMMAND(packet, hci_delete_stored_link_key)){ 1272 if (hci_stack.remote_device_db){ 1273 bt_flip_addr(addr, &packet[3]); 1274 hci_stack.remote_device_db->delete_link_key(&addr); 1275 } 1276 } 1277 1278 hci_stack.num_cmd_packets--; 1279 return hci_stack.hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 1280 } 1281 1282 /** 1283 * pre: numcmds >= 0 - it's allowed to send a command to the controller 1284 */ 1285 int hci_send_cmd(const hci_cmd_t *cmd, ...){ 1286 va_list argptr; 1287 va_start(argptr, cmd); 1288 uint16_t size = hci_create_cmd_internal(hci_stack.hci_packet_buffer, cmd, argptr); 1289 va_end(argptr); 1290 return hci_send_cmd_packet(hci_stack.hci_packet_buffer, size); 1291 } 1292 1293 // Create various non-HCI events. 1294 // TODO: generalize, use table similar to hci_create_command 1295 1296 void hci_emit_state(){ 1297 uint8_t event[3]; 1298 event[0] = BTSTACK_EVENT_STATE; 1299 event[1] = sizeof(event) - 2; 1300 event[2] = hci_stack.state; 1301 hci_dump_packet( HCI_EVENT_PACKET, 0, event, sizeof(event)); 1302 hci_stack.packet_handler(HCI_EVENT_PACKET, event, sizeof(event)); 1303 } 1304 1305 void hci_emit_connection_complete(hci_connection_t *conn, uint8_t status){ 1306 uint8_t event[13]; 1307 event[0] = HCI_EVENT_CONNECTION_COMPLETE; 1308 event[1] = sizeof(event) - 2; 1309 event[2] = status; 1310 bt_store_16(event, 3, conn->con_handle); 1311 bt_flip_addr(&event[5], conn->address); 1312 event[11] = 1; // ACL connection 1313 event[12] = 0; // encryption disabled 1314 hci_dump_packet( HCI_EVENT_PACKET, 0, event, sizeof(event)); 1315 hci_stack.packet_handler(HCI_EVENT_PACKET, event, sizeof(event)); 1316 } 1317 1318 void hci_emit_disconnection_complete(uint16_t handle, uint8_t reason){ 1319 uint8_t event[6]; 1320 event[0] = HCI_EVENT_DISCONNECTION_COMPLETE; 1321 event[1] = sizeof(event) - 2; 1322 event[2] = 0; // status = OK 1323 bt_store_16(event, 3, handle); 1324 event[5] = reason; 1325 hci_dump_packet( HCI_EVENT_PACKET, 0, event, sizeof(event)); 1326 hci_stack.packet_handler(HCI_EVENT_PACKET, event, sizeof(event)); 1327 } 1328 1329 void hci_emit_l2cap_check_timeout(hci_connection_t *conn){ 1330 uint8_t event[4]; 1331 event[0] = L2CAP_EVENT_TIMEOUT_CHECK; 1332 event[1] = sizeof(event) - 2; 1333 bt_store_16(event, 2, conn->con_handle); 1334 hci_dump_packet( HCI_EVENT_PACKET, 0, event, sizeof(event)); 1335 hci_stack.packet_handler(HCI_EVENT_PACKET, event, sizeof(event)); 1336 } 1337 1338 void hci_emit_nr_connections_changed(){ 1339 uint8_t event[3]; 1340 event[0] = BTSTACK_EVENT_NR_CONNECTIONS_CHANGED; 1341 event[1] = sizeof(event) - 2; 1342 event[2] = nr_hci_connections(); 1343 hci_dump_packet( HCI_EVENT_PACKET, 0, event, sizeof(event)); 1344 hci_stack.packet_handler(HCI_EVENT_PACKET, event, sizeof(event)); 1345 } 1346 1347 void hci_emit_hci_open_failed(){ 1348 uint8_t event[2]; 1349 event[0] = BTSTACK_EVENT_POWERON_FAILED; 1350 event[1] = sizeof(event) - 2; 1351 hci_dump_packet( HCI_EVENT_PACKET, 0, event, sizeof(event)); 1352 hci_stack.packet_handler(HCI_EVENT_PACKET, event, sizeof(event)); 1353 } 1354 1355 #ifndef EMBEDDED 1356 void hci_emit_btstack_version() { 1357 uint8_t event[6]; 1358 event[0] = BTSTACK_EVENT_VERSION; 1359 event[1] = sizeof(event) - 2; 1360 event[2] = BTSTACK_MAJOR; 1361 event[3] = BTSTACK_MINOR; 1362 bt_store_16(event, 4, BTSTACK_REVISION); 1363 hci_dump_packet( HCI_EVENT_PACKET, 0, event, sizeof(event)); 1364 hci_stack.packet_handler(HCI_EVENT_PACKET, event, sizeof(event)); 1365 } 1366 #endif 1367 1368 void hci_emit_system_bluetooth_enabled(uint8_t enabled){ 1369 uint8_t event[3]; 1370 event[0] = BTSTACK_EVENT_SYSTEM_BLUETOOTH_ENABLED; 1371 event[1] = sizeof(event) - 2; 1372 event[2] = enabled; 1373 hci_dump_packet( HCI_EVENT_PACKET, 0, event, sizeof(event)); 1374 hci_stack.packet_handler(HCI_EVENT_PACKET, event, sizeof(event)); 1375 } 1376 1377 void hci_emit_remote_name_cached(bd_addr_t *addr, device_name_t *name){ 1378 uint8_t event[2+1+6+248]; 1379 event[0] = BTSTACK_EVENT_REMOTE_NAME_CACHED; 1380 event[1] = sizeof(event) - 2; 1381 event[2] = 0; // just to be compatible with HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE 1382 bt_flip_addr(&event[3], *addr); 1383 memcpy(&event[9], name, 248); 1384 hci_dump_packet(HCI_EVENT_PACKET, 0, event, sizeof(event)); 1385 hci_stack.packet_handler(HCI_EVENT_PACKET, event, sizeof(event)); 1386 } 1387 1388 void hci_emit_discoverable_enabled(uint8_t enabled){ 1389 uint8_t event[3]; 1390 event[0] = BTSTACK_EVENT_DISCOVERABLE_ENABLED; 1391 event[1] = sizeof(event) - 2; 1392 event[2] = enabled; 1393 hci_dump_packet( HCI_EVENT_PACKET, 0, event, sizeof(event)); 1394 hci_stack.packet_handler(HCI_EVENT_PACKET, event, sizeof(event)); 1395 } 1396